<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>H5新特性</title>

  <style>
    html,
    body {
      margin: 0;
      padding: 0;
      width: 100%;
      height: 100%;
    }

    .flex {
      display: flex;
    }
  </style>
</head>

<body>
  <div class="container">
    <header>头部</header>
    <nav>导航</nav>
    <main class="flex">
      <aside>侧边栏</aside>
      <article>
        文章
        <section>文档中的节</section>
        <mark>高亮标签</mark>
        <dialog open="">弹窗标签</dialog>
        <hr>
        <p style="margin-top: 50px;">进度条标签：<progress></progress></p>

        <time datetime="2023-12-15"></time>
        <time datetime="PT2H30M">2h 30m</time>
      </article>
    </main>
    <footer>底部</footer>
  </div>
</body>

</html>